We all know that the fuel injection guys get the fun toting a laptop and things of that nature while tuning. So really, what kind of systems can we use on carbs?

The only things I can think of are

Wideband O2 system
Knocksensor standalone system.
EGT system

Anyone know of any systems we can plug in to help monitor a non-computer controled engine?

 

I just use a narrowband 3 wire O2, and reading plugs. Neither one has been working all that great for me :rofl: Actually I think i'm pretty close, I just need to find some rods that are eluding me.
I just tagged on in hopes of learning of another method. You might be able to rig up some sort of small home brewed computer datalogging thing. Measuring vacuum signal, O2 reading, throttle position... hmm...

 

Well I may have found something wonderful for the carb guys. I was reading the summit mag and they have an Air/fuel ratio device that will connect to the engine and even monitor and reference the air/fuel with the RPMs
It will record up to 45 minutes of data and you can link it up to your laptop or whatever.

I like it because, it not only shows you the airfuel, it shows you how lean and rich you are at what RPM and shows you trends.

However the price was like $400.


A Narrowband O2 is useless on a carb, you can only go wideband, the thing is I swear they are getting more and more expensive to get.

 

Huh, that logging system is pretty cool. If you buy the wideband O2 sensor as well, you're out $700 or so for the whole deal though. Ouch.

Narrowband is ok, at least it tells me if i'm way rich, or way lean. For WOT I just measure mixture by whatever gets me fastest. But for cruise I want stoich, or just slightly lean, and more timing. It's better than shooting blind, but obviously not as good as wideband. When I get the car dynotuned i'll have them hookup a wideband for me.